Canon fax basic 2000 Manuale Di Servizio
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G3 FACSIMILE COMMUNICATIONS
• Image transmission speed change from the receiver
The receiver returns to the PPh signal in response to the Sh signal from the
transmitter. The image transmission speed is then determined by the MPh
sequence sent from both modems.
Fig. 5-63 Image Transmission Speed Change from the Receiver
S
PP
B1
Image
data
data
"1"
ALT
PPh
E
flags
PPR
flags
Sh
PPS-NULL
flags
Image
data
data
ALT
ALT
MPh
MPh
E
MPh
MPh
TX
RX
Sh
S
PPh
Turn-off
Turn-off